Alright, let's work through 83420418 times 91047519 step by step
83420418 × 91047519 = 91047519 × (83420418)
+ 91047519 × 8 yielding 728380152
+ 91047519 × 10 that is equal 910475190
+ 91047519 × 400 giving us 36419007600
+ 91047519 × 0000 yielding 0
+ 91047519 × 20000 that equals 1820950380000
+ 91047519 × 400000 giving us 36419007600000
+ 91047519 × 3000000 resulting in 273142557000000
+ 91047519 × 80000000 yielding 7283801520000000

= 7595222092842942
